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The Hornfaced Bee For Efficient Pollination Of Small Farm Orchards, Suzanne W. T. Batra
The Hornfaced Bee For Efficient Pollination Of Small Farm Orchards, Suzanne W. T. Batra
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Osmia cornifrons is a highly efficient pollinator of rosaceous tree fruits (Pyrus and Prunus spp.). It is managed commercially in Japanese orchards, and it has been introduced into the eastern United States. Due to its effectiveness, docility, ease of handling and short flight range, it is well adapted for use on small farms.
Nematosporaceae (Hemiascomycetidae): Taxonomy, Pathogenicity, Distribution, And Vector Relations, Lekh R. Batra
Nematosporaceae (Hemiascomycetidae): Taxonomy, Pathogenicity, Distribution, And Vector Relations, Lekh R. Batra
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For almost a century (42, 139) certain yeast, or yeastlike parasites of fruits and seeds have been known. They occur on a wide variety of crop plants and cause such diseases as stigmatomycosis," "yeast-spot," "eye spot," and "internal rot." They seemingly represent a phylogenetic unit. They have cylindrical or pyriform asci, and the hyaline ascospores often are characteristically arranged in two fascicles lying end to end. All have acicular ascospores. (See figs. 2, a-c; 5 , c; 11, hand i; 12, A; 13, c-h; 15,j-k.) They have similar habitats, and several species may simultaneously occur in the same fruit or …
Descriptions, Biology, And Notes On The Identification Of Some Trogoderma Larvae, R. S. Beal Jr.
Descriptions, Biology, And Notes On The Identification Of Some Trogoderma Larvae, R. S. Beal Jr.
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For several years members of the dermestid beetle genus Trogoderma have attracted widespread attention, particularly since T. granariurn Everts, the khapra beetle, became established as an introduced pest in Arizona, California, Mexico, and New Mexico. This species has been the object of a control program to remove it as a hazard to stored grain and to prevent its spread to parts of the country where it is not known to occur. Species of Trogoderma other than the khapra beetle may also build up to damaging numbers in stored products. Information has been obtained on these species, as well as on …
Cucumber Growing, W. R. Beattie
Cucumber Growing, W. R. Beattie
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CUCUMBERS are included among the 20 important commercial truck crops that are shipped to the markets of the United States in large quantities. The area planted to cucumbers for table purposes in 1940 was 42,870 acres, and the crop produced was valued at $4,993,000, as reported by the Crop Reporting Board, Division of Agricultural Statistics, Agricultural Marketing Service. This acreage is exclusive of approximately 91,000 acres of cucumbers grown for pickles and also of the crop produced in greenhouses. This bulletin deals only with the production of table or slicing cucumbers as a field crop and those grown in coldframes, …
Vestigial Pleometrosis In The North American Polistes Pallipes Lepeletier, Joseph Bequaert
Vestigial Pleometrosis In The North American Polistes Pallipes Lepeletier, Joseph Bequaert
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In the October-December, 1919, issue of this BULLETIN my esteemed friend, Mr. Wm. T. Davis, has published some observations of the common American social wasps, a most welcome addition to the scanty literature of the subject in America. Among other interesting points, he relates several cases in which two, three, or four queens of the common Eastern Polistes pallipes Lepeletier ( = metrica Say; variatus Say) had worked together in establishing a new colony, though in this as in other species of Polistes each queen as a rule starts her nest alone.
8. The South And Central African Species Of The Genus Synagris Latreille (Hymenoptera), Joseph Bequaert
8. The South And Central African Species Of The Genus Synagris Latreille (Hymenoptera), Joseph Bequaert
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This is the first of a series of articles in which I shall deal with the diplopterous wasps of South and Central Africa, south of 10° S. lat. The area under consideration includes the south-eastern portion of the Belgian Congo, or the Katanga district, which in its fauna and flora has many points in common with Northern Rhodesia, and differs considerably from the equatorial Congo belt. Since for lack of material the wasps of the Katanga could not be fully treated before, the present paper will supplement my Revision of Congo Vespidae (1918).
Enkele Beschouwingen Over Kleuren En Kleurgroepen Bij Plooivleugelige Wespen, (1), Joseph Bequaert
Enkele Beschouwingen Over Kleuren En Kleurgroepen Bij Plooivleugelige Wespen, (1), Joseph Bequaert
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De kleur der levende wezens is wellicht onder alle eigenschappen deze die het spoedigst de aandacht vestigt. Inderdaad berust het schoonheids-genot dat wij bij het beschouwen van vele dieren en planten smaken, grootendeels op hunne harmonische kleurteekening. Desniettegenstaande is het opmerkelijk dat wij uit een wetenschappelijk oogpunt veel beter over den vorm dan over de kleuren der levende wezens zijn ingelicht. Dit is mijns inziens aan twee hoofdredenen te wijten. Eene eerste moeilijkheid ligt in den aard zelf van het onderwerp. Waarneming in de natuur en experiment in den proeftuin of in het laboratorium hebben al spoedig geleerd hoe de …
Iii. The Predaceous Enemies Of Ants, Joseph Bequaert
Iii. The Predaceous Enemies Of Ants, Joseph Bequaert
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The various means by which Nature prevents an excessive increase of the species not only forms in itself an interesting chapter of ecology, but its study is also of great importance in an understanding of the true meaning of Natural Selection. In the case of ants it has been contended that they are better defended than other insects against the attacks of predatory animals. Poulton evidently takes this for granted when he considers that ants, together with wasps, are among the favorite models for "mimicking" insects and other arthropods. These ant-like arthropods, having acquired by Natural Selection their resemblance "to …
On Eumenes Alluaudi Perez, A Precinctive Wasp Of The Seychelles (Hymenoptera), Joseph Bequaert
On Eumenes Alluaudi Perez, A Precinctive Wasp Of The Seychelles (Hymenoptera), Joseph Bequaert
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In my Catalogue of Ethiopian Diplopterous Wasps, published in 1918, I have attempted to correlate the various described forms of African Eumenes. In many cases, where specimens were not available for study, my conclusions were based on such inferences as could be made from published accounts, and were therefore only tentative. Eumenes alluaudi J. Perez,2 for instance, I regarded at the time as one of the color variants of Eumenes lepeleterii Saussure, to which it was said to be related by the author of the species. Through the courtesy of Mr. A. S. Rohwer, I recently had opportunity to examine …
Description D'Une Espece Congolaise Du Genre "Montezumia" (Hymenopteres, Vespides) Suivie De Remarques Taxonomiques Sur Ce Groupe, Joseph Bequaert
Description D'Une Espece Congolaise Du Genre "Montezumia" (Hymenopteres, Vespides) Suivie De Remarques Taxonomiques Sur Ce Groupe, Joseph Bequaert
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Parmi les Vespides assez nombreux que mon frère, le Dr MICHEL BEQUAERT, a bien voulu recueillir à mon intention au Katanga, se trouve un spécimen d'une espèce apparemment inédite du genre Montezumi·a. Je crois devoir la signaler sans retard, car elle constitue une addition des plus intéressante à la faune du Congo belge.
Scientific Results Of The Katmai Expedition Of The National Geographic Society Xiii. Bees And Wasps, Joseph Bequaert
Scientific Results Of The Katmai Expedition Of The National Geographic Society Xiii. Bees And Wasps, Joseph Bequaert
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Through the kindness of Prof. J as. S. Hine, I have been given the opportunity to examine the Aculeate Hymenoptera obtained by him during his two trips to Alaska in the summers of 1917 and 1919. The following list of the species collected includes also a few specimens taken at Seattle, Wash. Mr. Viereck has kindly confirmed the identification of Andrena jrigida.
Hymenoptera Collected Near Boston, Mass., With Descriptions Of A Variety Of Bombus Affinis, Joseph Bequaert
Hymenoptera Collected Near Boston, Mass., With Descriptions Of A Variety Of Bombus Affinis, Joseph Bequaert
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While collecting Hymenoptera at Forest Hills, Mass., and other localities in the vicinity of Boston, I have taken on two occasions a bumble-bee, which from its aberrant coloration could not be properly named with Franklin's "Bombidae of the New World." I have been permitted to examine similarly colored Bombus, taken some years previous by Professor Wheeler at Forest Hills and by Mr. J. E. Smith at Sherborn, Mass. It was finally recognized that all these specimens belong to a striking color-variant of Bombus affinis, which it is the purpose of this note to describe and name. I have used this …
The Nearctic Psammocharids Of The Genus Aporinellus Banks, Joseph Bequaert
The Nearctic Psammocharids Of The Genus Aporinellus Banks, Joseph Bequaert
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On one of the collecting trips made this summer with Prof. William M. Wheeler, in the vicinity of Boston, I collected a little Psammocharid which has proved to be an undescribed species of Aporinellus. In comparing this specimen with Mr. Nathan Banks' extensive collection of Psammocharids I have found another undescribed member of the same genus. Descriptions of both forms are given herewith, together with a brief review of the group. I am much indebted to Mr. Nathan Banks, of the Museum of Comparative Zoology, Cambridge, Mass., for the loan of rich material containing many types and for valuable bibliographic …
On The Occurance Of Vespa Austriaca Panzer In The Northeastern United States, Joseph Bequaert
On The Occurance Of Vespa Austriaca Panzer In The Northeastern United States, Joseph Bequaert
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There are many facts in the taxonomy and still more in the life-histories of the common American wasps (Vespa) which need a thorough revision. The following small contribution is made with the hope of interesting other entomologists in the subject. During the last summer, the .writer made a point of capturing all the specimens of wasps he met with on his collecting trips, but the result as a whole was very poor, 1916 apparently not being a wasp-year. However, amongst the catch were found two females which he was unable to refer to any of the species previously known from …
The North American Digger Wasps Of The Subfamily Scoliinae, Oscar C. Bartlett
The North American Digger Wasps Of The Subfamily Scoliinae, Oscar C. Bartlett
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This contribution to our knowledge of the sub-family Scoliinae (digger wasps) found in North America, Central America and the West Indies, is the result of work done at the Massachusetts Agricultural College under the direct supervision of Doctor H. T. Fernald, and forms a portion of a thesis for the degree of doctor of philosophy. In it, an attempt has been made to place before those interested, a paper in which our present knowledge of these wasps is systematically arranged and the identification of the species facilitated.
South African And Autralian Aculeate Hymenoptera In The Oxford Museum, C. T. Bingham
South African And Autralian Aculeate Hymenoptera In The Oxford Museum, C. T. Bingham
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No abstract provided.
Geschlechtsdimorphismus In Der Bienengattung Thygater Holmbg. (Hym.), A. W. Bertoni, C. Schrottky
Geschlechtsdimorphismus In Der Bienengattung Thygater Holmbg. (Hym.), A. W. Bertoni, C. Schrottky
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Als Nachtrag unserer Arbeit: "Beitrag zur Kennt.nis der mit Tetmlonia verwandten Bienen aus Südamerika", Zool. Jahrbücher, Bd. 29, bringen wir folgende Beobachtung.
Beitrag Zur Kenntnis Der Mit Tetralonia Verwandten Bienen Aus Sudamerika., A. W. Bertoni, C. Schrottky
Beitrag Zur Kenntnis Der Mit Tetralonia Verwandten Bienen Aus Sudamerika., A. W. Bertoni, C. Schrottky
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Unter dem Sammelnamen TetraZonia sind in den letzten Jahren eine Menge neuer Arten aus Südamerika beschrieben worden, ohne daß deren Verwandtschaft angegeben wäre, oder aber, wo die neuen Arten auf verschiedene Gattungen verteilt wurden, ist dies einzig auf die Zahl der Palpenglieder hin erfolgt, ein Verfahren, das niemals gebilligt werden kann, weil eine auf nur ein Organ begründete Einteilung notwendigerweise mangelhaft sein muß. Es ist daher wohl zu entschuldigen , wenn mehrere Bearbeiter den in dieser Gruppe aufgestellten neuen Gattungen überhaupt keine Beachtung schenkten. Indessen sind die Schwierigkeiten, sich in der wachsenden Zahl der „Tetralonia"-Arten zurechtzufinden, immer größer geworden, so …
Tetrachrysis Barrei Rad. (Hymen., Chrysid.), H. Bischoff
Bouwstoffen Voor De Hymenopteren-Fauna Van Belgie, Joseph Bequaert
Bouwstoffen Voor De Hymenopteren-Fauna Van Belgie, Joseph Bequaert
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In mijne beide vorige mededeelingen over de belgische Hymenoptera, gaf ik een zeer beknopt overzicht der genera van de meeste onzer inheemsche Aculeata en drukte tevens de hoop uit later een volledig overzicht der Belgische soorten uit deze groep in het licht te geven. Op een volledige naamlijst onzer vliesvleugelige insecten zal men ongetwijfeld nog lange jaren wachten, te meer daar zulk werk niet door een enkel onderzoeker kan opgemaakt worden, maar de vereenigde krachten van velen zal vereischen.
Die Nestanlage Von Xylocopa Frontalis Oliv., A. W. Bertoni, C. Schrottky
Die Nestanlage Von Xylocopa Frontalis Oliv., A. W. Bertoni, C. Schrottky
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Trotzdem unter den südamerikanischen Bienen die Xylocopaarten zu den häufigsten Erscheinungen gehören, ist über ihre Lebensweise noch sehr wenig bekannt geworden. Zugegeben, daß alle Arten dieser Gattung mehr oder minder nach einem Typ bauen, ist es andererseits doch recht wichtig, die Nestanlagen verschiedener Species zu untersuchen, da zweifellos jede Art ihre besonderen Eigentümlichkeiten hat, deren Kenntnis in gewissen Fällen selbst dem Systematiker von größtem Nutzen sein kann. Im Gegensatze zu vielen anderen solitären Bienen, die harmlos und friedlich bleiben, selbst wenn ihre Brut bedroht ist, zeigt sich unsere Xylocopa bei Verteidigung ihres Heimes äußerst reizbar, kampfesmutig und todesverachtend. Es blieb …
Mutilla Schencki Schmiedeknecht., H. Bischoff
Neue Beiträge Zur Lebensweise Der Trigonaloiden., H. Bischoff
Neue Beiträge Zur Lebensweise Der Trigonaloiden., H. Bischoff
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No abstract provided.
Ruwenzori Expedition Reports No. 13 Hymenoptera, C. T. Bingham
Ruwenzori Expedition Reports No. 13 Hymenoptera, C. T. Bingham
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No abstract provided.
Tweede Bijdrage Tot De Kennis Onzer Hymenopterenfauna, Joseph Bequaert
Tweede Bijdrage Tot De Kennis Onzer Hymenopterenfauna, Joseph Bequaert
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Als vervolg op mijne mededeeling op het voorgaande Congres (1), waarin ik een kort overzicht der Belgische Apiden-fauna gaf, wensch ik heden op dezelfde wijze eenige andere Angeldragende Hymenopteren-familiën te behandelen.
Over Onze Inheemsche Bijenfauna, Joseph Bequaert
Over Onze Inheemsche Bijenfauna, Joseph Bequaert
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De studie der Hymenopterenfauna van België werd tot dusverre door onze entomologen sterk verwaarloosd, en ook elders in Europa telt dit onderdeel der entomologie niet genoeg beoefenaren. In Nederland zelf, waar zekerlijk op gebied van natuurstudie over gebrek aan werkzame handen niet kan geklaagd worden, is de kennis der inheemsche Hymenoptera zeer onvoldoende. Waar J. Th. OUDEMANS (1) het aantal Nederlandsche soorten op 4000 durft schatten, staan er echter niet meer dan 1775 als inlandsch geboekt. Hier te lande is de toestand nog veel min bevredigend en het is hoog tijd dat een groot aantal liefhebbers het onderzoek dezer belangwekkende …
Bee Keeping, Frank Benton
Bee Keeping, Frank Benton
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Frequent inquiries from correspondents of the Department of Agriculture for information on matters pertaining to the culture of bees and particularly as to the conditions under which one may reasonably expect to meet with success in this pursuit, led to the preparation of this bulletin in July, 1897. Though designed by the author primarily to answer a few of the specific questions which are most likely to present themselves to the mind of the inquirer wholly unfamiliar with the subject, the aim has been also to introduce in the treatment of the various topics information which it is hoped will …
On The Hymenoptera Collected By Mr. W. L. Distant In The Transvaal, South Africa, With Descriptions Of Supposed New Species., C. T. Bingham
On The Hymenoptera Collected By Mr. W. L. Distant In The Transvaal, South Africa, With Descriptions Of Supposed New Species., C. T. Bingham
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No abstract provided.
List Of Aculeate Hymenoptera, G. Birkman
Note On Eumenes Conica, Fabr., And Megachile Disjuncta, Fabr., And Their Parasites Chrysis Funscipennis Brulle, And Parevaspis Abdominalis, Smith, C. T. Bingham
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No abstract provided.